PDO IN() Array Statement AND a placeholder

Question

I found this code on SO, which is great for using PDO and the IN() statement together.

$values = explode(\',\', $values) ; # 1,4,7

$placeholders = rtrim(str         


        

Answer 1

And an other solution can be (if you like the :param_name = $value way, as me):

$params = array(
     ':product' =>  $product
);
$_in_params = array();
foreach ( $_in_values as $idx_in => $value_in)
{
    $_in_params[] = ':param_in_'.$idx_in;
    $params[':param_in_'.$idx_in] = $value_in;
}

$query .= "SELECT * FROM table WHERE id IN (".join(',',$_in_params).") AND product=:product";

I'm not sure if this is the best and the most optimal solution, but it's a little bit more human readable :) And it can be helpful if you have a big an complicated query and you want to debug it

(I'm curious if someone have a good argument why NOT to do in this way)